Anti-friction bearing



(N0 Model.) 2 SheetsSheet 1.

J. N. MILEHAM. ANTI-FRIOTION BEARING.

No. 438,442. Patented Oct. 14, 1890.

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J. N. MILBHAM. ANTI-FRICTION BEARING.

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WITNESSES AM/M,-

'W y M flttorney;

l UNITED. STATES PATENT OFFICE.

JOSEPH MILEHAM, OF RUTHERFORD, NEIV JERSEY.

ANTI-FRICTION BEARING.

SPECIFICATION forming part of Letters Patent No. 438,442, dated October14, 1890.

Application filed June 30, 1890. Serial No. 357,282. (No model) T0 atwhom it may concern:

Be it known that I, JOSEPH N. MILEHAM, a citizen of the United States,residing at Rutherford, Bergen county, State of New Jersey, haveinvented certain new and useful Improvements in Anti -Frict-ionBearings, of which the following is a specification.

My invention relates to that class of antifriction bearings for axles,shafts, &c., in which in place of the ordinary stationary bearing-block,or of the rotating disk-bearin gs sometimes used, pivoted or vibratingsectors are employed.

In that class of bearings in which such sectors are used, the journal,shaft, or axle is provided with curved bearing-ribs set to makesuccessive contact with the different sectors,

which necessitates expensive forgings, the

heatingand weakening of the shaft or axle, and renders the applicationof the bearing difficult and expensive to structures already in use.

In order to obviate these objections and to otherwise improve theconstruction and operation of this class of bearings, I construct thesame as fully set forth hereinafter and as illustrated in theaccompanying drawings, in Which- Figure 1 is a transverse sectionalelevation of the truck of a railway-car provided with bearings embodyingmy improvements. Fig. 2 is a side elevation in part section, Showing oneof the bearings. Fig. 3 is an inverted plan view of one of the bearings;Fig. 4, a perspective view showing the shaft and bearing-sleevedetached; Fig. 5, a detached view showing a modification.

I have illustrated my invention, which may be applied to shafts or axlesof any character, in connection with the axle A, connected with thewheels B B of a car-truck, said axle terminating in the end journals 1,which may be of ordinary diameter or may be slightly reduced, and toeach journal is secured-a sleeve 0, upon the exterior of which are twoor more curved ribs 2 2, arranged in different vertical planes, with theend of one rib upon the same longitudinal plane as the end of the otheror adjacent rib, so that said ribs together extend completely around theaxle, but at a different distance from the end.

In connection with each rib 2, the bearingface of which is curved tocorrespond to a circle having the axis of an axle as its center, is apivoted sector D, the pivot or fulcrum 3 of which coincides with thecenter of the circle to which the curved edge of the sector corresponds,each of said sectors being in the same plane with one of the ribs 2, sothat as the axle revolves and the end of said rib is brought beneath theedge of the sector the rib will bear upon said edge and the two willmove together until the rib passes from the sector, after which theadjacent rib (which makes contact with the adjacent sector prior to theseparation of the first rib and sector) will constitute the hearing. Inorder to avoid the necessity of increasing the size of the sector, thelatter should be swung automatically to such a position that the end ofthe bearing-rib will first make contact with the bearing-edge of thesector at a point adj acent to the end of the latter, for which purposethe sector should be swung to the position indicated in Fig. 2 prior tothe rib 2 being brought to position to make contact with the sector. Inorder to effect this result, I interpose between each pair of sectors atoothed pinion or wheel E, Fig. 1, which engages with curved racks 6 6upon the inner faces of the opposite sectors, so that as one is carriedforward by contact with its bearing the other, which is then out ofcontact with its bearing, will be brought to aposition (shown in Fig. 2)to make contact wit-h the bearing as the first bearing passes from oncontact with its sector. I

In order to insure the positive and continued travel of the sectors andbearings together, each sector and its bearing may be provided withteeth, as shown at as m, Fig. 1, which mesh with each other in the samemanner as gears, or greater frictional adhesion than results from havingplain surfaces may be secured by making the bearing-faces with V shapedgrooves and projections corresponding to those of ordinary frictionalgears, as shown at y y, Fig. 1.

Where the bearings are employed in connection with car-axles, or withshafts provided with fly-wheels or pulleys, the sleeve may be applied tothe axle or shaft inside of the wheel or pulley instead of to an outsideIOC preserve the proper position of the shaft or axle with its axisvertically below the pivotal points 3, I make use of'a slotted guide orhanger 8 adjacent to each bearing, and to reduce the friction fromlateral thrustI provide said hanger with anti-friction rollers 9,bearing against the opposite sides of the axle or shaft. (See dottedlines, Fig. 2.)

Any suitable means may be employed for securing the sleeve upon the axleor shaft. As shown in Fig. 1, where the sleeve is on the end of theaxle, it is secured by a nut 12, screwing onto the end of the axle, afeather 13 preventing the sleeve from turning independently of the axle.

By forming the curved ribs 2 upon the sleeve I am not only enabled toapply the bearing to structures already in use with little or noalteration thereof, but I am further able to reduce to a very greatextent the cost of the bearing, inasmuch as the sleeve and ribs may becast, thus avoiding the forging necessary to form the ribs on the shaftor axle, while the weakening of the latter from repeated heating inforging is prevented.

Each sector may be pivoted to a part of the bracket 8, and, while thesaid pivoted connection may be of any suitable character, I prefer toprovide each sector with an car 15, which enters a slot in a transverseportion 16 of the bracket, across which slot passes the pivot 3.

Where the swinging movements of the sectors is limited, a lever E, Fig.4, having toothed ends, may be substituted for the pinion.

\Vithout limiting myself to the precise construction and arrangement ofparts shown and described, I claim 1. The combination, with an axle orshaft and with two or more pivoted sectors, of a sleeve secured to theaxle or shaft and provided with two or more curved ribs for engaging theedges of the sectors, substantially as set forth.

2. The combination, with an axle, of a sleeve provided with two or morecurved ribs and sectors pivot-ally supported above the axle and havingcurved bearing faces or ribs and an intermediate connection between thesectors, whereby the movement of one imparts a reverse motion to theother, substantially as set forth.

8. The combination, with the hangers 8, of sectors pivoted to thehangers, the interm ediate pinion or lever E, and the sleeve 0, providedwith curved bearin gs 2 and secured to a shaft or axle, substantially asset forth.

4. The combination, with the shaft, of curved bearings provided withtoothed bearing-faces and pivoted sectors also having toothedbearing-faces, substantially as set forth.

5. The combination, with the axle and curved bearings, of pivotedsectors having racks and an intermediate toothed pin or 1ever engagingsaid racks, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSEPH N. MILEHAM.

Witnesses:

A. W. KIDDLE, E. M. TAYLOR.

